/*
 * Copyright (C) 2020 Agrui
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.android.os;

import java.util.Stack;
import android.util.Log;

public class ObjectPool<T> {

    private static final String TAG = "ObjectPool";
    private static final int MAX_POOL_SIZE = 10;
    private final Stack<T> pool = new Stack<>();
    private int mPoolSize = MAX_POOL_SIZE;
    public ObjectPool(int size) {
        mPoolSize = size;
    }

    public ObjectPool() {
    }

    public  T obtain(Class<T> clazz) {
        T object = null;
        synchronized (pool) {
            if (!pool.isEmpty()) {
                object = (T)pool.pop();
            } else {
                try {
                    object = clazz.getDeclaredConstructor().newInstance();
                } catch (Exception e) {
                }
            }
        }
        return object;
    }

    public void recycle(T object) {
        synchronized (pool) {
            if (pool.size() < mPoolSize) {
                pool.push(object);
            }
        }
    }



}

